Horizontal Decanter Centrifuge for Municipal Sewage Treatment Plant Sludge Centrifugal Dewatering Equipment for Refinery

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Horizontal Decanter Centrifuge for Municipal Sewage Treatment Plant Sludge Centrifugal Dewatering Equipment for Refinery

Two-phase solid-liquid separation Decanter centrifuge for dehydration and concentration of municipal sewage sludge

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Model:
LW
Brand:
Shenzhou

Product Description

Operating principle:

The purpose of separation is to separate out substances with different mass ratios from mixed fluid.Separation forms included solid-liquid separation,liquid-liquid separation and liquid-liquid-solid separation.
When mixed fluid enters rotating bowl of centrifuge through feed tube ,solids with larger density would rapidly deposit on inner wall of the bowl,forced by centrifugal acceleration.Then spiral pusher pushed deposited solids to taper end of the bowl,and discharges them out of centrifuge from residual outlet.Meanwhile ,liquid phase with smaller density forms a liquid ring layer and discharges from bowl through overflow port,the bowl and spiral pusher run at a high speed simultaneously ,for there exists speed discrepancy,deposited solids on the wall of bowl could be conveyed to residue outlet by spiral pusher.This separation process carry out continuously.

油田 (7)

Separation technique
Feeding-gravitational separation-liquid discharge-sediment discharge.
Separation effect factors Centrifuging factor ,length to diameter ratio of cavity ,depth of fluid pool.
2phase

Field control
Bowl rotating speed ,rotative speed difference,between,spiral pusher and bowl depth of liquid pool.

Application fields

1. Food

A flesh processing,aquatic products process and edible protein recovery;
B Extract plant protein from soybean,oily seeds and leguminous plants;
C Recovery of brewing leach liquor malt and yeast
D Treatment and recovery of wine lees liquid;
E Extract of instant coffee and tea;
F Clarification of palm oil,olive oil and seed oil;
G Extract juice from fruits ,berries and vegetables;
H Recovery of refined pectin;
I Clarification of grape juice and grape wine.

2. Environmental protection

Drilling mud ,industrial effluent ,waste water of municipal works,fertilizer,organic waste water,paint sludge,plastic
particles,gravel washing water,waste water in steel-making ,flue gas desulfurization,sewage sludge treatment of waterworks.

3. Petroleum and chemical industry

A Processing of kaolin and calcium carbonate,production of bentonite and titanium dioxide;
B Exploration of petroleum oil,natural gas,crude oil refining and related industries,additive of lube oil and waste oil recovery;
C products and final products of organic chemistry industry;
D Thermoplastic materials,includes PVC,polypropylene,polystyrene,synthetic rubber and fiber;
E Inorganic chemical industry ,includes bleach,acid,silica products and fertilizers;
F Treatment of spent wash and molasses fermentation residues;
G Extraction of starch from wheat,corn ,cassava and potato;
H Waste liquid recovery and recycling from above industries.

Specification

Model	Diameter(mm)	Lenght(mm)	Max speed	L/D ratio	G-force	Capacity(m3/h)	Main motor power(Kw)	Weight(kg)	Dimension (mm)
LW250*1000	250	1000	5000	4	2722	0.5-5	7.5	950	21201250680
LW300*900	300	900	4200	3	2964	1-6	11	1160	21501300900
LW300*1200	300	1200	4000	4	2784	2-6	11	1350	24501300900
LW355*1160	355	1160	3600	3.3	2576	2-8	15	1400	24701350830
LW355*1460	355	1460	3600	4	2576	2-10	15	1800	27501350830
LW400*1200	400	1200	3200	3	2294	3-12	18.5	1800	273016001080
LW400*1600	400	1600	3000	4	2016	3-15	22	2000	313016001080
LW450*1800	450	1800	2800	4	1976	4-25	37	2500	332017001130
LW500*2000	500	2000	2800	4	1750	5-35	45	4000	352018001170
LW530*1855	530	1855	2600	3.5	2006	5-38	55	4680	388513501600
LW530*2120	530	2120	2400	4	1709	5-40	55	4800	415013501600
LW550*2000	550	2000	2800	4	2414	6-40	55	5700	457013801600
LW650*1950	650	1950	2200	3	1761	6-45	75	5000	484015101720
LW650*2600	650	2600	2000	4	1456	6-65	90	6000	549015101720
LW720*2160	720	2160	2000	3	1612	7-80	120	6000	520016001800
LW720*2880	720	2880	2000	4	1306	7-90	120	8000	310016001800
LW800*2400	800	2400	1800	3	1451	20-100	150	12000	582020001300
LW800*3200	800	3200	1800	4	1451	20-120	150	1300	710020001300

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Contact: owen tang

Email: owen@lnszjx.com

Whatsapp:+8613130702388

Main technical features

1. Industrial design

Whole machine set design follows concept of advanced industrial design,ensures stability,functionality and safety of whole machine.Also effectively absorbs shear force of dynamic load during operation.

2. Effectively ease resonance during rotating of bi-rotor

When centrifuge works,there is no obvious first-order and two-order resonance regions within designed speed range,meanwhile ,whole vibration intensity of bearing seat is definited within 2mm/s-4mm/s.All of this eliminates extra fatigue damage to components and assembly units from high frequency vibration during operation and sudden vibration when shut down.

3. Thoroughly eliminate phenomenon of liquid ring stalling

Phenomenon of liquid ring stalling happens during heavy duty boot or shutdown process of complete set machine,especially for LW550 and even larger models,It would makes bounce or wild shake,causes extra impact fatigue damage to main bearings,screw bearings and inner parts of rotary bowl.Fortunately ,our engineers have solved this problem thoroughly.
4. Unique technique adopt in main component work-blanks

The manufacturing methods of main component work-blanks are adopt centrifugal casting technique and overall mould-making forging technique,thoroughly avoid risks such as inter-granular corrosion and relaxation of residual stress release in welding joint.

5. Main bearing selection

We use origin bearings of international first-line brands such as SKF,FAG and so on.

6. Constant temperature detection

All fashioning components and assembly units are detected in constant temperature condition,to make sure of actual processing quality meets the requirements of designed precision accuracy.

7. Inter-change ability

Whole machine physical design and processing technique adopted in critical position,ensure all assembly units and bowls of the same centrifuge model interchangeable.It is not only easy to maintain ,but also greatly improve the reliability and safety of equipment.

8. Simplyand safely in bearing disassemblement

One layer of oil film is injected into contact surfaces between bearing and work-piece by high-
pressure,during disassemblement bearing from the machine.which would fundamentally eliminate friction within different parts.As a result,it would reduce 90% of pulling force and lower the risk of damage to high-precision parts when disassemble bearing.
9.Main bearing lubrication system
There are two kinds of lubrication system for specific product models :
A thin oil lubrication
* Oil pump offers an uninterruptedly power to ensure oil works circularly;
* Jet oil lubrication constantly clean and lubricate bearings and reduce temperature;
* Oil filter system ensure lubricant’s cleanliness;
* Oil pressure energy storage system ensure lubrication pump offers an extra oil supply(the pressure is no less than 0.4Mpa) for 5-6 minutes,when power fails accidentally;
* Constant temperature system is available.

B grease lubrication
* Adopt a grease with properties of extreme pressure resistance ,oxidation resistance ,abrasion resistance,water scour
resistance,corrosion-proof and high temperature resistance.
* Optional automatic grease system fills grease on main bearing at designed hours and quantity.

10. Main bearing BH device (patent design)

There are two spare safe bearings at either end of main bearing.When machine works well,they keep certain clearance from bearing inside track to chief axis.When unexpected condition occurs,main bearing got damaged or circle center deviation causing an amplitude of vibration reaches to designed clearance,safe bearings begin to work as main bearing Meanwhile,computer automatic control system would get a feedback of abnormal vibration value on bearing position then activates emergency shutdown and goes a smooth shut down.This system protects machine free from damaging and ensure production safety.

11. GSRL feeding device (potent design)

New design of internal spiral core tube has got following achieves.Without reducing centrifugal acceleration,shorten triangle belt's traction time,reduce disorder of swirling flow and extend separation time.Meanwhile increases inner working pressure of centrifuge,and restrains liquid foaming.

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